Licensed Home Extension Builder Rozelle
NSW licensed extension specialist. Rozelle 2039 extensions on 1850s–1920s-era homes require structural sign-off, Class M footings, and matched connection — we engineer and document properly.
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MBA NSW0476 300 300Quick Answer
A home extension in Rozelle costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Inner West Council approvals, and construction under one fixed-price contract.
Rozelle Home Extensions — Fixed Price
A home extension in Rozelle means terraces, and terraces here extend backwards. The Victorian terraces and sandstone workers' cottages on 100 to 350m² blocks sit inside Heritage Conservation Areas covering most of the suburb, so the Darling Street character and the ornate frontages stay, and the work opens the rear into a light-filled kitchen and living space. Attic conversions within the existing roof are sometimes on the table too.
This is tight, exacting work. Party walls flank both boundaries, side access is usually nonexistent, and Hawkesbury Sandstone with substantial fall to Iron Cove and Rozelle Bay means older cottages need careful underpinning before new load goes on. At a $2.0M to $4.0M median, with harbour-fall lots well past $5M and the Bays West precinct set to reshape the foreshore, the land is worth building into.
What I would check first on your Rozelle terrace: the heritage listing, the party-wall and access situation, and the sandstone fall under the addition. Those set the approach from the start.
We build these fixed-price, licence HBL 487805C. Ask how we would sequence yours before anything else.
Buildana manages the complete home extension process in Rozelle — from design consultation and structural engineering through to DA or CDC approval, and fixed-price construction to handover. Extend your home without the stress.
Read our Home Extension Cost Guide 2026 or explore extension approval pathways in NSW.
- Home extensions in Rozelle from $150K
- Inner West Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1850s–1920s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Light Rail Rozelle Bay (in suburb) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Terraces extend backwards
The Victorian terraces and sandstone workers' cottages on 100 to 350m² blocks sit inside Heritage Conservation Areas covering most of the suburb, so the Darling Street character and frontages stay.
The work opens the rear into a light-filled kitchen and living space, sometimes with an attic conversion within the existing roof.
Tight ground, harbour fall
Both boundaries carry party walls, side access is rarely there, and sandstone falling to Iron Cove and Rozelle Bay means older cottages need underpinning before new load goes on.
At a $2.0M to $4.0M median, with harbour-fall lots past $5M and Bays West set to reshape the foreshore, the land is worth building into.
Home extension builder in Rozelle — key facts
- Suburb
- Rozelle, NSW 2039
- Council / LGA
- Inner West Council (Inner West)
- Primary zoning
- R1/R2 General/Low
- Typical lot size
- 100–350m²
- Soil class
- M
- Median house price
- $2.0M–$4.0M (harbour-fall $5M+)
- Home era
- 1850s–1920s
- Typical price range
- $150,000 – $600,000+
- Typical timeline
- 6–12 months design to handover
- Approval pathway
- CDC for most rear extensions, DA for second-storey
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
Cost Guide
| Item | Estimated Range |
|---|---|
| Single-room addition (bedroom/study) | $71,000 – $170,000 |
| Kitchen/living extension | $180,000 – $410,000 |
| Master suite + ensuite addition | $150,000 – $330,000 |
| Second storey (full or partial) | $330,000 – $650,000 |
| Multi-room ground floor wrap | $410,000 – $710,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
On-site assessment of your 1850s–1920s-era home in Rozelle. We check structural condition, block dimensions (100–350m²), setback availability, and Inner West Council's DCP requirements. Written feasibility and cost estimate provided.
⏱Designing an extension is half about the new space and half about how it joins the old one. Doorway position, ceiling height transition, floor level matching, light wells — the junction makes or breaks how the finished home feels.
⏱We lodge your extension approval — CDC for eligible designs or DA through Inner West Council. Full documentation including structural engineering for Class M soil, BASIX, and shadow diagrams. CC issued before works start.
⏱For ground-floor rear extensions you usually stay in the house during the build, with temporary weatherproofing at the junction wall until the new section is locked up. Second-storey additions need a 4–8 week relocation during the roof-off and frame-up phase.
⏱Final inspection, Occupation Certificate, 6-year structural warranty. Your Rozelle home now has the space your family needs.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
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Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
Frequently Asked Questions
Buildana built our granny flat in just 12 weeks. Fast approvals, great communication, and a beautiful final product. Highly recommend.
Fatima Al-Rashid
Liverpool, NSW
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Extend, Don't Move — Rozelle
Free design consultation for Rozelle 2039. We'll assess your home, design the extension, and provide a fixed-price quote.
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Other Buildana services in Rozelle
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Rozelle 2039. Inner West Council regulations and local controls are covered on each page.